Note 166 — Chapter XL · BATTLES OF THERMOPYLÆ AND ARTEMISIUM.
Reading edition
Herodot. vii, 213, 214; Diodor. xi, 8.
Ktesias states that it was two powerful men of Trachis, Kalliadês and Timaphernês, who disclosed to Xerxes the mountain-path (Persica, c. 24).